- Supreme Court of Iowa | Wednesday, June 17, 1981 | Cited 0 times
- Court of Appeals of Iowa | Monday, January 23, 1995 | Cited 0 times
- Nebraska Supreme Court | Friday, May 25, 1990 | Cited 0 times
- Colorado Court of Appeals | Thursday, April 20, 1995 | Cited 0 times
- Court of Appeals of Iowa | Tuesday, February 23, 1993 | Cited 0 times
- South Dakota Supreme Court | Wednesday, August 14, 1991 | Cited 0 times